JavaScript function for checking if two objects are equal by value

objectsEqual.js

var objectsEqual = (a, b) => {
    const aProps = Object.getOwnPropertyNames(a),
          bProps = Object.getOwnPropertyNames(b);
    
    if (aProps.length != bProps.length) {
        return false;
    }
    
    for (var i=0; i<aProps.length; i++) {
        const propName = aProps[i];

        // check for NaN's
        if (a[propName] != a[propName]) { 
            if (b[propName] != b[propName]) {
                continue;
            }
            return false;
        }

        // do a recursive check if property value is an object
        if (typeof(a[propName]) === 'object') {
            if (typeof(b[propName]) === 'object' && objectsEqual(a[propName], b[propName])) {
                continue;
            }
            return false;
        }

        // otherwise compare values
        if (a[propName] !== b[propName]) {
            return false;
        }
    }
      
    return true;
}